Chemical Grades in conversion

[twiice]

Disclaimer: I've never converted powder before, and know jack all about chemistry.

The only problem being; it's quite difficult where I am to obtain BB and BA locally.

I've noticed there's a few different grades, AR, USP, ACS.

Does it matter which? I have access to AR 99%>

Cheers,

twIIce

 

[TWOLIP]

I stick to usp everything they are highly trusted